0600Patch 6.0.2 (14-October-2014): Thick Hide now also reduces the chance for attacks to be parried by 3%.

0500Patch 5.2.0 (5-Mar-2013): Thick Hide now reduces critical strike chance from all types of attacks made against the Guardian Druid, instead of just melee.

0500Patch 5.0.4 (28-August-2012): Changed from Increases your Armor contribution from cloth and leather items by X%, increases armor while in Bear Form by an additional Y%, and reduces the chance you'll be critically hit by melee attacks by Z%.

0400Patch 4.0.6 (8-Feb-2011): The Thick Hide tooltip should now reflect the new increased values.

0300/0400Patch 4.0.1 (12-Oct-2010): Now also reduced chance to be crittically hit by 2/4/6%. In addition, Thick Hide also increases armor while in Bear form by an additional 11/22/33%.